BRIEF-Motorola to cut 3,000 jobs, most from cell phone unit

Oct 30 (Reuters) - Motorola Inc (MOT.N): * Motorola (MOT.N) co-CEO Brown says cost cutting to include 3,000 layoffs, more than two thirds of which will come from Mobile Devices unit * Motorola co-CEO Jha says hopes Mobile devices sales grow meaningfully in second half of 2009 from first half * Motorola co-CEO Brown says Mobile devices unit's bottom line needs to improve dramatically before a spinoff